Hewlett-Packard Development Company, L.p.

Donnell D Daniels

Jason M Quintana

Robert Lawrence Winburne

Weiyun Sun

Jeffrey Allen Wagner

Michael Ewe

Eric Collins

James D Plymale

Kyle Mannari

Rachelle Cobb

Printers and associated printer maintenance methods and apparatus are disclosed. An example printer includes a nozzle to dispense fluid; a wiper to wipe the nozzle during a maintenance event; and a controller to cause the nozzle to dispense fluid during the maintenance event while the wiping material engages or is immediately adjacent the nozzle to deter a substance from being present within the nozzle.

Printers and associated printer maintenance

An example three-dimensional printing system includes a first carriage, a second carriage, and a synchronization controller. The synchronization controller is coupled to the first carriage and the second carriage to synchronize movements of the first carriage and the second carriage. The synchronization controller is to avoid interference between the first carriage and the second carriage.

Carriage synchronization of a multi-carriage three-dimensional printer

Example implementations relate to initiation of a shortage model in a printing device. For example, initiation of a shortage model may include guidance of a page of print media through a printing device by a feedshaft and an upper paper guide, where the page of print media is held by a media control surface. A shortage model may be initiated based on an amount of data to be printed. An ink nozzle may be turned off based on the initiated shortage model.

Initiating a shortage model

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Vancouver, WA, United States of America

Donnell D Daniels